95 bronc with 351 problems started yesterday i found pinion bearing bad changed that reverse not working you can tell its shifting in reverse the motor idles down i pulled the drive shaft and in neutral it will turn one way and not the other ( by hand not with motor) forward pulls good fluid smells fresh and proper level I'm at lost don't know anything about automatic trannys also can not push it when in neutral

all help is appreciated

 

i did fix the rear end all new bearings

 

The E4OD should give you fault codes (within the KOEO and CM results) if something fails. Was the lack of reverse sudden or accompanied by any other symptoms such as power loss or noises? It is possible that you had the hydraulic solenoid that shifts it into reverse fail. It is internal to the transmission and typically when the solenoids are replaced it is done as a package deal replacing them all at once. b4hntn chased an E4OD issue for months before his research nailed it down. Might want to check out his Recent thread about the E4OD. It could provide some insight.

 

it was sudden have not checked codes check engine light not on but will check codes soon

 

codes checked 626,539,10,111,29

 

Never seen a PCM throw two AND three-digit codes... Should be one or the other.

Codes 626 - is E4OD-related

Code 539 - indicates that the A/C compressor was ON during the KOER test. Nothing wrong but it changes the results of the test because the computer compensates for the additional drag on the engine.

Code 111 - System Pass Code (basically this is the "all clear" or "clean bill of health" code).

There is no Code 10 and if Code 29 is true, your speedometer, cruise control and entire E4OD will not work properly if at all.

 

i used a code reader to pull codes was not counting flashes. i did that a couple times in past and got frustrated with it and bought a code reader.

 

the cruise has not worked since i got the bronco
what does code 29 mean

 

gs, I always get a 10 between my three digit codes KOEO and CM.

gjnicholas, the 29 in CM needs checking again.

626 Coast clutch solenoid circuit fault

1. It is one of the four solenoids in the solenoid pack. If you can replace the transmission filter you can replace this. You do need a torque wrench and a place to get messy.

2. It could be the wiring harness. Look for rat droppings or chewed wires.

3. It could be the PCM (computer).

To test 1. and 2. disconnect the PCM connector, 10mm socket on the bolt in the center. Look at Haynes and find the pins on the harness connector that go to the Coast clutch solenoid and the ground. Specifications are 20-30 ohms. I now have two spare solenoid packs and they read 20.5 and 20.4 setting on the bench so I would expect just a little higher reading with the wiring harness attached. I'll sell you one it you need it.

To test 3. see ecmtogo.com in Houston. Look at the send in form and fill it out. Make two copies and keep one. Disconnect the rear half of the fender liner and pry on it to remove the PCM and send it to them. You may want to open the computer and look at the board around the three capacitors. It will have sealing tape on it if repaired due to the 1-year warranty. After they repaired mine the transmission works better than it ever has. I hauled my four wheeler last weekend and was drop jawed at the improvement on the hills.

Code 539 like GS said, turn off the A/C during KOEO.

 

On the cruise control. I am not sure but suspect it also interacts with the PCM. However, if your air bag light is flashing 3-2 code it could be the clock spring.

 

would the 626 Coast clutch solenoid circuit fault keep me from being able to roll it backwards when in neutral or do i have something broke inside the tranny

 

I don't know for sure. I think the shift lever shaft only controls the park and neutral. The MLPS (aligned to the neutral marks when in neutral), PCM and solenoid pack control all other gears.

Is the key off when you try to roll it in neutral?

 

i think i tried it both ways but don't rember

just rembered when on jack stands truck running in neutral the wheels turned going forward

 

finally got to drive it today had to use floor jack to get it out anyhow forward worked but slipped bad but moved reverse still does nothing
the solenoid can you clean them or they just go bad and you can't do anything to make them better

 

If one solenoid fails the solenoid pack has to be replaced. From what I have heard, they usually fail electrically. That is why I suggested the ohm reading with the PCM connector pulled. You can rule out the code for a bad coast clutch solenoid or bad wire without dropping the pan and then suspect the PCM.